Bushing.



RUSHING. Arrmoumu rmzn ma. 8,1904.

Patented Dec. 29, 1908.v

'PATENT OFFICE.

'HENRY I. GILBERT, or SAGINAW, MICHIGAN.

'BUsHING- Specication of Letters Patent.

Patented Dec.' 29, 1908.

Application filed February 8, 1904. vSerial No; 192,701.

pulleys and the like, where interchangeablev bushings are required toenable anysize of pulley having a given shaft bore or opening, which isgenerally of standard diameter, to be inserted and clamped upon a-shaftof any diameter less thansuch shaft bore or opengThe object of myinvention is to provide a simple, efiicient and reliable bushing ofnoveland original construction, as will be understood from the descriptionhereinafter given.

In the drawing, Figure lis a side elevation ofthe spoke portion of apulley illustrating the usual shaft bore or opening in which my novelform of bushing has been inserted; Fig. 2 is a side elevation (on ascale larger than in Fig. l) of'one of the halves of my bushing Fig. 3an `end' elevation of my bushing, partly in section, and Fig. 4 aplan ofa corrugated form of bar or strip. v

For the purpose of affording a clear and comprehensive understanding ofmy invention, I have shown my bushing in connection with a sheet metalpulley, although its application is not limited thereto. As matter offact, I contemplate using my invention wherever applicable.

As herein shown, the pulley is of the split type having the spoke arms lwhichare expanded at their central portion to form the usual shaft boreor opening 2 within which may be inserted, if desired, a plain shell, intwo halves, forming a hub thimble.

The bushing, now to be described, is made in two similar halves toaccommodate the split character of the pulley itself. Each half bushingis made as a unit, as shown in Figs. 2 and 3, comprising a series oflongitudinal metal bars or strips 3, preferably sheet metal, bypreference arranged radially of the longitudinal axis of the shaft andconsequently radially ofthe axis of rotation.

Y These bars or strips, which by preference are fiat as shown, haveinner and outer bearing surfaces, the formerof which are presented tothe shaft itself, Fig. 3, and the latter to the hub structure or shaftbore of the pulley.

In' order to secure and maintain the bars v or strips in their properrelative position as described, a plurality of curved rods or wires 4,preferably two, as herein shown, are passed through holes or openings inthe strips intermediate their inner and outer bearing surfaces. The endbars or strips may be secured tothe Wires or rods in any suitablemanner, as for instance by riveting the rods thereto, as herein shown.

To properlyspace or distance the respective strips a series of distancetubes or sleeves 5 are strung on the wires or rods 4 and betweenV thestrips. Any desired number of the'strips may be employed and the samemay be spaced apart any distance according to the length of distancesleeve.

As hereinbefore stated, my bushing'comprises two of the halves justdescribed, which areV each slightly less than a semicircle so as not tocome in contact with each other when the pulley is clamped to the shaft.

` Bushings made in accordancewith my invention as above described arelight but durable and alsoeflicient and comparatively inexpensive.

It will beunderstood that various mechanical changes may be made inrespect to the forml and 'construction illustrated and described withoutdeparting from the spirit and scope of my invention and claims.

As hereinbeforevstated, the bars or strips are preferably fiat, as shownin Figs. 1, 2 and 3, but if desired the bars or strips may partake ofother forms or shapes, as for instance the same may be corrugated, asindicated by the bars 6 in Fig. 4.

I claim:

1. A bushing comprising a series of bars or strips arrangedlongitudinally of the axis of the bushing and having bearing surfacesconcentric to such axis, and means for rigidly vholding such strips inproper position relative to each other and to said axis; substantiallyas described.

2. A bushing comprising a series of bars or strips arrangedlongitudinally of the yaxis of the bushing andk having their oppositesides or edges of unequal width and having their narrower edges arrangedconcentric to such axis and serving as bearing surfaces; substantiallyas described.

3. A bushing comprising a series of bars,

or strips arranged longitudinally of the axis of the bushing and havinginner and outer bearing surfaces concentric to such axis,

means for rigidly holding said strips in said position and in properrelation one with the other, and means for distancing such strips;substantially as described.

4. A bushing comprising a series of bars or strips arrangedlongitudinally of the axis of the bushing and having inner and outerbearing surfaces concentric to such axis, curved Wires or rods passingthrough said strips for holding them in proper relative position, andmeans for distancing said strips; substantially as described.

5. A bushing comprising a series of bars or strips arrangedlongitudinally of the axis of the bushing and having inner and outerbearing surfaces concentric to such axis, and curved wires or rodspassing through said strips and secured to the end ones thereofsubstantially as described.

6. A bushing comprising a series of bars or strips arrangedlongitudinally of the axis of the bushing and having inner and outerbearing surfaces concentric to such axis, curved wires or rods passingthrough said strips and secured to the end ones thereof, and means fordistancing the strips; substantially as described.

7. A bushing comprising a series of bars or strips arrangedlogitudinally of the axis of the bushing and having inner and outerbearing surfaces concentric to such axis, curved wires or rods passingthrough said strips and secured to the end ones thereof, and a series ofdistance sleeves strung on such rods between the strips for distancingthe latter; substantially as described.

8. A half bushing comprising a series of bars or strips arranged in asubstantial,

semi-circle longitudinally of the axis of the bushing with their narrowedges arranged to be presented to a shaft, and means for rigidly holdingsaid strips in proper position g substantially as described.

9. A half bushing comprising a series of bars or strips arranged in asubstantial semi-circle longitudinally of the axis of the bushing withtheir narrow edges arranged to b e presented to a shaft, andsemi-circular rods passing through said strips and secured to theoutermost ones thereof; substantially as described.

10. A half bushing comprising a series of bars or strips arranged in asubstantial semi-circle longitudinally of the axis of the bushing withtheir narrow edges arranged to be presented to a shaft, semi-circularrods passing through said strips and secured to the outermost onesthereof, and distance sleeves strung on such rods between the strips fordistancing the latter; substantially as described.

l1. A bushing comprising a series of bars or strips arrangedlongitudinally of the axis of the bushing and of rectangular shape incross section with their pairs of opposite sides of unequal size, saidstrips having their narrower sides or edges concentric to such axis anddirected towards the bushing axis, and rods bent to a circle and passingthrough the opposite Wider sides of all of the strips; substantially asdescribed.

HENRY J. GILBERT.

Witnesses H. MEAD HAMMOND, ARNOLD BOUTELL.

